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env GO111MODULE=off
env GOPATH=$WORK/gopath/src/shadow/root1${:}$WORK/gopath/src/shadow/root2
# The math in root1 is not "math" because the standard math is.
go list -f '({{.ImportPath}}) ({{.ConflictDir}})' ./shadow/root1/src/math
stdout '^\(.*(\\|/)src(\\|/)shadow(\\|/)root1(\\|/)src(\\|/)math\) \('$GOROOT'(\\|/)?src(\\|/)math\)$'
# The foo in root1 is "foo".
go list -f '({{.ImportPath}}) ({{.ConflictDir}})' ./shadow/root1/src/foo
stdout '^\(foo\) \(\)$'
# The foo in root2 is not "foo" because the foo in root1 got there first.
go list -f '({{.ImportPath}}) ({{.ConflictDir}})' ./shadow/root2/src/foo
stdout '^\(.*gopath(\\|/)src(\\|/)shadow(\\|/)root2(\\|/)src(\\|/)foo\) \('$WORK'(\\|/)?gopath(\\|/)src(\\|/)shadow(\\|/)root1(\\|/)src(\\|/)foo\)$'
# The error for go install should mention the conflicting directory.
! go install -n ./shadow/root2/src/foo
stderr 'go: no install location for '$WORK'(\\|/)?gopath(\\|/)src(\\|/)shadow(\\|/)root2(\\|/)src(\\|/)foo: hidden by '$WORK'(\\|/)?gopath(\\|/)src(\\|/)shadow(\\|/)root1(\\|/)src(\\|/)foo'
-- shadow/root1/src/foo/foo.go --
package foo
-- shadow/root1/src/math/math.go --
package math
-- shadow/root2/src/foo/foo.go --
package foo
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